Combined dental engine and chair.



No. 642,536. Patented Ian. 30, I900.

' .C. E. SUUTHWELL- COMBINED DENTAL ENGlNE AND CHAIR.

(Application filed Sept. 14, 1898.)

{No Model.)

2 Sheets-She l.

' C. C. SUUTHWELL.

COMBINED DENTAL ENGINE AND CHAIR.

(Application filed Sept. 14, 1898.) 040 Model.) -2 sheets-sheet 2.

Patented Jan. 30,1900.

2O to the upper end of this extension may be coned'on the motor-shaft,-. and the letters a; a. indicate the electrical wires running from any 1 suitable source of electrical supplyand connected with binding posts on the. motor, so as to cause the rotation of the mortor-shaft when the current is completed. The mount ing of-the' motor on the upright standard or support also carries with it anothe'r novel fea j ture of my invention-via, the. connecting fore have not been carried by an adjustable chair.

Referring to this feature of the invention, the'numeral 21 indicates the extension of the upright standard-or support, and

rectal any approved form of engine-head.

In the Fig. 1 illustration I show a well-known form comprising the engine-arms 22 and 22',

a handpiece 23, and the dental tool 24. This toolisi'otatedby means of an endless cord 25 which-is passed around the motor-pulley 20, thence upwardly over two pulleys at the upper end of the extension 21, thence over twopulleys 'atthe end of the arm 22, and

"fl'nallyfaround a pulleyat'one end of the dental. tool. While in.Fig. 1 the motor is shown as suspended from the lower end of the upright .understood as limiting myself to this exact standard or support, yet I do not wish to be location of the motor, as it will be obvious "endless"eord'25;as"in the Fig. 1 form.

:that said motor may be connected to the standard'or support at any other desirable point. For instance, in Fig. 5 Ishowa modified arrangement, wherein the motor is connected to the upper end of the extension 21.

I have illustrated in said figure a common a form of motor in this class of machines in which-the motor is inelosed in a spherical shell,'(iudicated by the numeral 26.) Theshaft 27 of this motor extends out through the shell and is. connected to a flexible shaft which passes through a flexible tubing 38, said ilexible shaft being finally connected to the dental tool. This form of motor of course dispenses entirely with the necessity of employing the In the Fig. 5 construction also it is advisable to form the extension 21 with a lower flexible portion 21' in order to permit of a certain amount of yield or flexibility.

The letters 6 e in Fig. 5 indicate the wires which passthrough the tubular standard and lead to the motor.

There are various ways in which the standardor support may be formed for providing for the'pass getheret'hrough of the airand of the elect ical wires. Fig. 4 of the draw-' ings shows a simple embodiment of my invention in this respect. In this figure the standard or support is provided with top and bottom pieces, and the bottom piece may be to which standard ,or support and are so fitted in open ings therefor as to render the escape or air at this point impossible. Other wires 0 c are arranged in the standard or support and connected at their lower ends to the binding posts and extended upwardly and connected to similar binding-posts, which pass through openings in the'top of the standard or supportand render said openings air-tight.

Other wires (not shown) are connected to the latter binding-posts and lead to the electrical device. I I

It will also be obvious that, if desired, a tubular standard or support may be em ployed having open ends. In this case the flexible tubing for the air would pass directly through the standard'or upright and the electrical wires would also extend therethrough In Figs. 1 and 2 I show the standard or support as formed with two chambers, one for the electrical wires extending throughout the length of the standard or support (designated by the nneral 31) and the other as a passage for the at, said passage advisablyterminating short of the upper end of the standard or support and designated by the numeral 32. To the lower end of the standard or support in the Figs. 1 and 2 construction is connected 31 of the standard or support, are indicated by the letters (1 (I. These wires extend out through the upper end of the tube and are adapted for heating various kinds of electrical appliances used in dentistry or other wise. In the illustration 0f.my .invention theyareshown as leading-to-aaaimheatenfih These wires may also beused for heating an annealing-slab or may be used for the purpose of being connected to a cataphoric outfit. By providing for the wire and tubing passing through a tubular standard or support the wires are confined and prevented from passing-over'the patients lap, and the. whole arrangement is siairip'lified and'convenience promoted. In the Figs. 1 and 2 construction a shorttube 35 isshown as leading from the air-passage 32, and in this short tube is arranged a two-way cook 36. Connected to the short tube are two flexible tubes, (desi gnated, respectively, by the numerals 37 and I upon. If it is desired thatablast of warmer 38,} i The latter tube extends to and commublast is used for the purpose of blowing away chips, 850., from around the tooth operated air be directed into the mouth of the patient 'for. the purposeof not only blowing away chips but also of warming the cavity, thetwo-way cock is turned in a reverse direction, so as to permit the air to pass into the flexible tube 38. Said air will then enter the airheater 34 and will pass into and out 0t" the flexible tube 39 in a heated condition.

Where the extension 21 of the upright standardor support is employed, I prefer to connect said extension to the upright by means of the interposed ring 47. By this construction free access can be had to the wires at any time. It is not absolutely essential for this purpose, however, that the connection 47 should be in the form of a complete circle, inasmuch as a connection of half-cireular orhalf-squa-re form would answer-the S tin-pu p 'Ih Fig. 8 of the drawings I show still another modified form of the invention, wherein the upright standard or support is provided not only with separate passages 31 and 32 for the but also an additional. passage 48 for the enelectrical wires and for the air, respectively,

trance of water into the tube. The standard or upright is also shown as supporting a so- :52, which is adapted when opened to dis charge water into a glass carried by a glass holder 53, extendingfrom said pipe it).

In the use of my invention it will be evident that that feature thereof which comprehends the carrying of the motor by the upright standard or support and the connection of the operative parts of the dental engine to an upward extension from said standard or support provides a most convenient arrangement, inasmuch as compactness is not only secured, but at the same time the motor is conveniently located, and said motor as well as the dental engine are caused to follow all the movements oradjustments of the chair.

Thefeature' of my invention which. comprehends the employment of a tubular standard or support for the passage therethrough ofelcctrical wires and for forming passage for air, &c., is alsoa most advantageous arrangement, as will be readily understood from the preceding explanation.

IVhile I have herein shown the tubular standard or upright as connected to a dental chair, yet I do not wish to be understood as limiting my invention in all its phases to such particular adaptation. It is possible that the invention will be found of considerable utility in surgical chairs and chairs of like character, wherein a tubular standard or support i may be connected theretoand said standard or support adapted -for the passage therethrough of wires, or of air or water, or of all of these elements.- I furthermore wish to be understood as not limiting myself to two flexible tubes extending from the air-passage of the tubular upright, inasmuch as where warm air is not used merely a single tube may be provided, or where only warm air .is desired to -be used likewise merely a single tube may be provided.

While, I have herein shown the invention as applied to an adjustable chair capable of adj ustment both vertically and revolubly, yet

tical adjustment or a chair capable of only revolnbic adjustment. 1

It will be seen from the drawings that the bracket l l, which supports the standard [2, is pivoted on a bolt 54. By this arrangement thestamiard is permitted to swing in the arc of acircle, whereby the parts carried by the standard can be brought closer to or farther away from the chair and enabling the dentist to work with much more convenience.

That I claimas my invention isl. The combination, of an adjustable chair, a standard or support carried thereby, and adapted to follow theldiiicrent adjustments of the chair, said standard or support provided with an upward extension, a dental-engine arm secured to said extension, a prime motor carried by the standard or support, and unconnected with any exterior fixed point, to thereby adapt said motor to freely follow the movements of the chair with the different adjustments of said chair, means for operating the motor, and a connection between the motor and the tool of the dentahengino arm, said connection adapted for transmitting thd rotation of the motor-shaft to the dental tool.

:3. The combination, of an adjustable chair, a tubular standard or support carried there by, an air-conduit leading to or through the tubular standard or support, and a suitably connected tube for finally receiving the air and for-discharging the same.

The combination, of an adjustable chair, a tubular standard or support carried by said chair,electrical conductors extending through the tubular standard or support, an electricaldevice with which the electrical conductors are connected, an air-conduit leading to or throughthe tubular standard or support, and

a suitably-connected tube for finally receiving the'air and for discharging, the same.

- 4. The combination of an adjustable chair, a tubular standard or support carried thereby, said standard or support adapted toserve as a passage for air; tubinfgs leading therefrom a he ter to which'one of said tubes leads, mea s for causing the air to pass into either of the tubes, and means for permitting the flow of the air out of the heater. 5.- The combination,'o an adjustable dental chair, a tubular standard or support car-' i'ied thereby, said standard or support servihg as a conduit for electrical wiring, and

formed or provided with an upward exten-- sion or continuation thereof, said extension -being joined to the standard or support proper by an open connection, whereby free access to the wiring may be had, and an en'- gine-arm connected to the upward extension of the standard or support. V,

6; The combination,- of an adjustable dental chair, a tubular standard or support carried thereby, said standard or support formed or provided with an upward extension, electrical conductors extending through the tu-. bular standard or support, an electrical device with which the electrical conductors are. connected, an air-conduit leading to or through the tubular standard or support, a

' suitably-connected tube for finally receiving I the air and fordischarging the same, a den-Z tal-engine arm connected to the upward extension, a motor carried by the standard or support, and aconnection between the motorand the dental tool of the-dental-engine arm, for transferring the rotation of the motor to,

said tool.

7. The combination, of an adjustable chair, a tubular standard or support carried thereby, said standard or support provided with a plurality of passages, electrical conductors extendipg through a passage ofthe tubular standard or support, and adapted to.be connected to an electrical device, an air-conduit leadin'g toor through one of the passages of the tubular standard or support, a

suitably connect'ed tube for finally receiving the air and for dischargingthe same, awaterpipe connected with one of the separate passages of the standard or support, .a spittoon 'carri'edby the tubular standard, means'for conducting the water from the water-passage of the tubular standard or support into the spittoon, and means for discharging the vater from the-'spittoon.

8. The combination, of an adjustable chair,

- a. tubular standard or support carried thereby, an air-conduit leading to or through the tubular standard or support, a tube connected thereto, a heater carried by the standardor support, and to which heater said tube con-- nects, and means for causing'the air to leave the heater.

9. The combination with an adjustable chair, of a standard carried thereby and ad-. 

